Quartz heater



FIG. 1 is a front elevation view of a quartz heater showing my new design;

FIG. 2 is a right side elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a bottom view thereof; and,

FIG. 5 is a top view thereof.

The left side elevation view of the quartz heater not shown is the mirror image of the right side elevation shown in FIG. 2.

The conventional electric cord has been shown fragmentarily in FIGS. 2, 3 and 5 for ease of illustration. 

The ornamental design for a quartz heater, as shown and described. 